[Mesa-stable] [Mesa-dev] [PATCH 1/2] intel/compiler: Memory fence commit must always be enabled for gen10+

[Francisco Jerez]

Anuj Phogat <anuj.phogat at gmail.com> writes:

> On Wed, Feb 7, 2018 at 11:56 AM, Francisco Jerez <currojerez at riseup.net>
> wrote:
>
>> Anuj Phogat <anuj.phogat at gmail.com> writes:
>>
>> > Commit bit in the message descriptor (Bit 13) must be always set
>> > to true in CNL+ for memory fence messages. It also fixes a piglit
>> > GPU hang on cnl+ in simulation environment.
>> > Piglit test: arb_shader_image_load_store-shader-mem-barrier
>> > See HSD ES # 1404612949
>> >
>> > Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
>> > Cc: mesa-stable at lists.freedesktop.org
>> > ---
>> >  src/intel/compiler/brw_eu_emit.c | 4 +++-
>> >  1 file changed, 3 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/src/intel/compiler/brw_eu_emit.c
>> b/src/intel/compiler/brw_eu_emit.c
>> > index c25d8d6eda..1fb9aab51c 100644
>> > --- a/src/intel/compiler/brw_eu_emit.c
>> > +++ b/src/intel/compiler/brw_eu_emit.c
>> > @@ -3275,7 +3275,9 @@ brw_memory_fence(struct brw_codegen *p,
>> >                   struct brw_reg dst)
>> >  {
>> >     const struct gen_device_info *devinfo = p->devinfo;
>> > -   const bool commit_enable = devinfo->gen == 7 && !devinfo->is_haswell;
>> > +   const bool commit_enable =
>> > +      devinfo->gen >= 10 || /* HSD ES # 1404612949 */
>> > +      (devinfo->gen == 7 && !devinfo->is_haswell);
>>
>> A BSpec quote if you have one would be more informative here than the
>> HSD ES number, particularly if the reader is not on the Intel VPN.  With
>> that change:
>>
> ​I tried but couldn't find a BSpec change. I'll try once more.
> Does your r-b still apply?
>

Yes, it's not a big deal, patch is r-b either way.

>>
>> Reviewed-by: Francisco Jerez <currojerez at riseup.net>
>>
>> >     struct brw_inst *insn;
>> >
>> >     brw_push_insn_state(p);
>> > --
>> > 2.13.6
>> >
>> > _______________________________________________
>> > mesa-dev mailing list
>> > mesa-dev at lists.freedesktop.org
>> > https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>>
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